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USING IRONPDF

ASP .NET Print PDF Files Programmatically with IronPDF

Curtis Chau
Curtis Chau
Published:

IronPDF enables reliable PDF printing in ASP.NET applications with server-side and client-side capabilities, handling enterprise requirements including network printers, error handling, and compliance-ready document generation with full audit trails for SOC2 and HIPAA environments.

ASP.NET print PDF file tasks often involve unique challenges that you frequently encounter in enterprise architectures. Whether you're generating PDF documents for invoices, reports, or shipping labels, implementing reliable print functionality requires go to server-client architecture complexities while maintaining security compliance and data sovereignty. The IronPDF library provides professional features including digital signatures, watermarking, and PDF/A compliance for long-term archival.

In this article, we'll show you how to handle PDF printing tasks using IronPDF's effective .NET PDF library, which provides professional security features and complete compliance documentation. The library supports various deployment scenarios including Azure, AWS, and Docker containers.

What Are the Key Challenges of PDF Printing in ASP.NET?

Traditional desktop applications can directly access the default printer, but ASP.NET Core applications face several hurdles when printing PDF documents. The Chrome rendering engine in IronPDF helps overcome many of these limitations:

// This fails in ASP.NET - wrong approach
Process.Start(@"C:\Files\document.pdf"); // Works locally, crashes on server
// This fails in ASP.NET - wrong approach
Process.Start(@"C:\Files\document.pdf"); // Works locally, crashes on server
' This fails in ASP.NET - wrong approach
Process.Start("C:\Files\document.pdf") ' Works locally, crashes on server
$vbLabelText   $csharpLabel

The code above illustrates a common mistake in enterprise environments. The server environment lacks direct printer access due to IIS security restrictions, and the system throws errors due to permission limitations. These constraints are particularly critical in regulated industries where audit trails and access controls must be maintained. Remember that web applications must handle both server-side and client-side printing scenarios effectively while maintaining data residency requirements. The IronPDF engine provides solutions for remote deployment and distributed architectures.

How Do I Get Started with IronPDF?

IronPDF provides a complete .NET Core solution for generating PDF documents and printing them without external dependencies like Adobe Reader. The library maintains SOC2 Type II certification and offers detailed security documentation for enterprise deployments. The NuGet package installation is straightforward for both .NET Framework and .NET Core applications. Let's install the IronPDF package using NuGet:

Install-Package IronPdf
Install-Package IronPdf
SHELL

This .NET library works seamlessly across operating systems, including Windows Server, Linux distributions, and Docker containers, eliminating compatibility issues that plague other libraries. It provides enterprise support with complete SLAs and works well in Microsoft Windows and other OS environments with on-premise deployment options. For macOS development, IronPDF offers native support for both Intel and Apple Silicon processors.

How Do I Create and Print PDF Documents Server-Side?

Here's how to generate and print a PDF document from HTML markup in your ASP.NET controller with audit logging capabilities. The ChromePdfRenderer ensures pixel-perfect rendering with full CSS support:

using IronPdf;
using Microsoft.AspNetCore.Mvc;
using System.Drawing;
public class PdfController : Controller
{
    public IActionResult Index()
    {
        // Initialize the renderer with security settings
        var renderer = new ChromePdfRenderer();

        // Configure print-improve settings for enterprise compliance
        renderer.RenderingOptions.PrintHtmlBackgrounds = true;
        renderer.RenderingOptions.MarginBottom = 10;
        renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;
        // Generate PDF from HTML
        var pdf = renderer.RenderHtmlAsPdf("<h1>Invoice</h1><p>Total: $799</p>");
        // Print to default printer
        pdf.Print();

        // Log for compliance audit trails
        LogPrintActivity(pdf.MetaData);

        return Ok("Document sent to printer");
    }

    private void LogPrintActivity(PdfMetaData metadata)
    {
        // Implement your enterprise audit logging here
        // This ensures compliance with SOC2 and HIPAA requirements
    }
}
using IronPdf;
using Microsoft.AspNetCore.Mvc;
using System.Drawing;
public class PdfController : Controller
{
    public IActionResult Index()
    {
        // Initialize the renderer with security settings
        var renderer = new ChromePdfRenderer();

        // Configure print-improve settings for enterprise compliance
        renderer.RenderingOptions.PrintHtmlBackgrounds = true;
        renderer.RenderingOptions.MarginBottom = 10;
        renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;
        // Generate PDF from HTML
        var pdf = renderer.RenderHtmlAsPdf("<h1>Invoice</h1><p>Total: $799</p>");
        // Print to default printer
        pdf.Print();

        // Log for compliance audit trails
        LogPrintActivity(pdf.MetaData);

        return Ok("Document sent to printer");
    }

    private void LogPrintActivity(PdfMetaData metadata)
    {
        // Implement your enterprise audit logging here
        // This ensures compliance with SOC2 and HIPAA requirements
    }
}
Imports IronPdf
Imports Microsoft.AspNetCore.Mvc
Imports System.Drawing

Public Class PdfController
    Inherits Controller

    Public Function Index() As IActionResult
        ' Initialize the renderer with security settings
        Dim renderer As New ChromePdfRenderer()

        ' Configure print-improve settings for enterprise compliance
        renderer.RenderingOptions.PrintHtmlBackgrounds = True
        renderer.RenderingOptions.MarginBottom = 10
        renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print

        ' Generate PDF from HTML
        Dim pdf = renderer.RenderHtmlAsPdf("<h1>Invoice</h1><p>Total: $799</p>")
        ' Print to default printer
        pdf.Print()

        ' Log for compliance audit trails
        LogPrintActivity(pdf.MetaData)

        Return Ok("Document sent to printer")
    End Function

    Private Sub LogPrintActivity(metadata As PdfMetaData)
        ' Implement your enterprise audit logging here
        ' This ensures compliance with SOC2 and HIPAA requirements
    End Sub
End Class
$vbLabelText   $csharpLabel

The ChromePdfRenderer handles the conversion while preserving CSS styling and font size formatting. This example shows basic printing to the default printer without user interaction while maintaining security compliance through metadata tracking and access controls. The renderer also supports JavaScript execution and custom render delays for dynamic content.

What Does the Server-Side Print Output Look Like?

Windows 'Save Print Output As' dialog box displaying file system folders and drives, with PDF format selected as the save type

How Do I Configure Network Printers?

For enterprise environments requiring specific printer routing with compliance tracking, IronPDF offers complete print document management. The library supports various paper sizes and page orientations:

public IActionResult PrintToNetworkPrinter(string filePath)
{
    try 
    {
        // Load existing PDF file with security verification
        var pdfDocument = PdfDocument.FromFile(filePath);

        // Verify document integrity for compliance
        if (!VerifyDocumentIntegrity(pdfDocument))
        {
            return Unauthorized("Document integrity check failed");
        }

        // Get print document for advanced settings
        var printDocument = pdfDocument.GetPrintDocument();

        // Specify network printer with failover support
        printDocument.PrinterSettings.PrinterName = @"\\server\printer";
        printDocument.PrinterSettings.Copies = 2;

        // Configure page settings for enterprise standards
        printDocument.DefaultPageSettings.Environment = false;
        printDocument.DefaultPageSettings.PaperSize = new PaperSize("A4", 827, 1169);
        var renderer = printDocument.PrinterSettings.PrinterResolution;

        // Add print tracking for audit trails
        var printJobId = Guid.NewGuid().ToString();
        LogPrintRequest(printJobId, filePath, printDocument.PrinterSettings.PrinterName);

        // Execute print with error handling
        printDocument.Print();

        // Confirm successful print for audit
        LogPrintSuccess(printJobId);

        return Json(new { 
            success = true, 
            jobId = printJobId,
            message = "Document sent to " + printDocument.PrinterSettings.PrinterName
        });
    }
    catch (Exception ex)
    {
        // Log failure for compliance
        LogPrintFailure(ex.Message);
        return StatusCode(500, new { error = "Print operation failed", details = ex.Message });
    }
}

private bool VerifyDocumentIntegrity(PdfDocument document)
{
    // Implement document verification logic
    // Check for digital signatures, tampering, etc.
    return true; // Simplified for example
}
public IActionResult PrintToNetworkPrinter(string filePath)
{
    try 
    {
        // Load existing PDF file with security verification
        var pdfDocument = PdfDocument.FromFile(filePath);

        // Verify document integrity for compliance
        if (!VerifyDocumentIntegrity(pdfDocument))
        {
            return Unauthorized("Document integrity check failed");
        }

        // Get print document for advanced settings
        var printDocument = pdfDocument.GetPrintDocument();

        // Specify network printer with failover support
        printDocument.PrinterSettings.PrinterName = @"\\server\printer";
        printDocument.PrinterSettings.Copies = 2;

        // Configure page settings for enterprise standards
        printDocument.DefaultPageSettings.Environment = false;
        printDocument.DefaultPageSettings.PaperSize = new PaperSize("A4", 827, 1169);
        var renderer = printDocument.PrinterSettings.PrinterResolution;

        // Add print tracking for audit trails
        var printJobId = Guid.NewGuid().ToString();
        LogPrintRequest(printJobId, filePath, printDocument.PrinterSettings.PrinterName);

        // Execute print with error handling
        printDocument.Print();

        // Confirm successful print for audit
        LogPrintSuccess(printJobId);

        return Json(new { 
            success = true, 
            jobId = printJobId,
            message = "Document sent to " + printDocument.PrinterSettings.PrinterName
        });
    }
    catch (Exception ex)
    {
        // Log failure for compliance
        LogPrintFailure(ex.Message);
        return StatusCode(500, new { error = "Print operation failed", details = ex.Message });
    }
}

private bool VerifyDocumentIntegrity(PdfDocument document)
{
    // Implement document verification logic
    // Check for digital signatures, tampering, etc.
    return true; // Simplified for example
}
Imports System

Public Function PrintToNetworkPrinter(filePath As String) As IActionResult
    Try
        ' Load existing PDF file with security verification
        Dim pdfDocument = PdfDocument.FromFile(filePath)

        ' Verify document integrity for compliance
        If Not VerifyDocumentIntegrity(pdfDocument) Then
            Return Unauthorized("Document integrity check failed")
        End If

        ' Get print document for advanced settings
        Dim printDocument = pdfDocument.GetPrintDocument()

        ' Specify network printer with failover support
        printDocument.PrinterSettings.PrinterName = "\\server\printer"
        printDocument.PrinterSettings.Copies = 2

        ' Configure page settings for enterprise standards
        printDocument.DefaultPageSettings.Environment = False
        printDocument.DefaultPageSettings.PaperSize = New PaperSize("A4", 827, 1169)
        Dim renderer = printDocument.PrinterSettings.PrinterResolution

        ' Add print tracking for audit trails
        Dim printJobId = Guid.NewGuid().ToString()
        LogPrintRequest(printJobId, filePath, printDocument.PrinterSettings.PrinterName)

        ' Execute print with error handling
        printDocument.Print()

        ' Confirm successful print for audit
        LogPrintSuccess(printJobId)

        Return Json(New With {
            .success = True,
            .jobId = printJobId,
            .message = "Document sent to " & printDocument.PrinterSettings.PrinterName
        })
    Catch ex As Exception
        ' Log failure for compliance
        LogPrintFailure(ex.Message)
        Return StatusCode(500, New With {
            .error = "Print operation failed",
            .details = ex.Message
        })
    End Try
End Function

Private Function VerifyDocumentIntegrity(document As PdfDocument) As Boolean
    ' Implement document verification logic
    ' Check for digital signatures, tampering, etc.
    Return True ' Simplified for example
End Function
$vbLabelText   $csharpLabel

This approach provides complete control over printer settings, including paper format and resolution, which is vital for correct drawing and layout in enterprise printing scenarios. The implementation includes complete error handling and audit logging required for compliance frameworks. For high-volume printing, consider implementing parallel processing and memory optimization.

What Are the Security Considerations for Network Printing?

Windows Save As dialog box for saving print output as PDF, showing file system navigation with folders and drive storage information

How Can I Verify Successful Print Jobs?

Browser console output showing a successful print operation with JSON response containing 'success: true' and confirmation message that document was sent to Microsoft Print to PDF

What Is the Best Client-Side Printing Strategy?

Since browsers restrict direct printer access for security reasons, implement client-side printing by serving the PDF file with appropriate security headers. IronPDF supports various export formats and compression options to improve file delivery:

public IActionResult GetRawPrintablePdf()
{
    var renderer = new ChromePdfRenderer();

    // Apply enterprise security settings
    renderer.RenderingOptions.EnableJavaScript = false;
    renderer.RenderingOptions.CreatePdfFormsFromHtml = false;

    var pdf = renderer.RenderHtmlAsPdf(GetInvoiceHtml());

    // Apply document security for client-side viewing
    pdf.SecuritySettings.AllowUserPrinting = true;
    pdf.SecuritySettings.AllowUserEditing = false;
    pdf.SecuritySettings.AllowUserCopyPasteContent = false;
    pdf.SecuritySettings.AllowUserAnnotations = false;
    pdf.SecuritySettings.AllowUserFormData = false;

    // Add watermark for security
    pdf.ApplyWatermark("<h2 style='color:red;opacity:0.3'>CONFIDENTIAL</h2>", 30, VerticalAlignment.Middle, HorizontalAlignment.Center);

    // This header tells the browser to display the file inline.
    // We use IHeaderDictionary indexer to prevent ArgumentException.
    HttpContext.Response.Headers["Content-Disposition"] = "inline; filename=invoice.pdf";
    HttpContext.Response.Headers["X-Content-Type-Options"] = "nosniff";
    HttpContext.Response.Headers["Content-Security-Policy"] = "default-src 'self'";

    return File(pdf.BinaryData, "application/pdf");
}

public IActionResult PrintUsingClientWrapper()
{
    var printUrl = Url.Action(nameof(GetRawPrintablePdf));
    // Use a simple HTML/JavaScript wrapper to force the print dialog
    var html = new StringBuilder();
    html.AppendLine("<!DOCTYPE html>");
    html.AppendLine("<html lang=\"en\">");
    html.AppendLine("<head>");
    html.AppendLine("    <title>Print Document</title>");
    html.AppendLine("    <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'self' 'unsafe-inline'\">");
    html.AppendLine("</head>");
    html.AppendLine("<body>");
    // Load the PDF from the 'GetRawPrintablePdf' action into an invisible iframe.
    html.AppendLine($"    <iframe src='{printUrl}' style='position:absolute; top:0; left:0; width:100%; height:100%; border:none;'></iframe>");
    html.AppendLine("    <script>");
    // Wait for the iframe (and thus the PDF) to load, then trigger the print dialog.
    html.AppendLine("        window.onload = function() {");
    html.AppendLine("            // Wait briefly to ensure the iframe content is rendered before printing.");
    html.AppendLine("            setTimeout(function() {");
    html.AppendLine("                window.print();");
    html.AppendLine("                // Log print attempt for audit");
    html.AppendLine("                console.log('Print dialog triggered at: ' + new Date().toISOString());");
    html.AppendLine("            }, 100);");
    html.AppendLine("        };");
    html.AppendLine("    </script>");
    html.AppendLine("</body>");
    html.AppendLine("</html>");
    return Content(html.ToString(), "text/html");
}

private string GetInvoiceHtml()
{
    // Build HTML with proper structure and security considerations
    return @"
    <html>
    <head>
        <style>
            body { font-family: Arial, sans-serif; }
            .header { font-weight: bold; color: #1e40af; border-bottom: 2px solid #3b82f6; padding-bottom: 5px; }
            .content { padding-top: 10px; }
            .footer { margin-top: 20px; font-size: 10px; color: #666; }
            @media print {
                .no-print { display: none; }
            }
        </style>
    </head>
    <body>
        <div class='header'>Invoice Summary (Client View)</div>
        <div class='content'>
            <p>Document content: This file is improve for printing.</p>
            <p>Total Amount: <b>$799.00</b></p>
        </div>
    </body>
    </html>";
}
public IActionResult GetRawPrintablePdf()
{
    var renderer = new ChromePdfRenderer();

    // Apply enterprise security settings
    renderer.RenderingOptions.EnableJavaScript = false;
    renderer.RenderingOptions.CreatePdfFormsFromHtml = false;

    var pdf = renderer.RenderHtmlAsPdf(GetInvoiceHtml());

    // Apply document security for client-side viewing
    pdf.SecuritySettings.AllowUserPrinting = true;
    pdf.SecuritySettings.AllowUserEditing = false;
    pdf.SecuritySettings.AllowUserCopyPasteContent = false;
    pdf.SecuritySettings.AllowUserAnnotations = false;
    pdf.SecuritySettings.AllowUserFormData = false;

    // Add watermark for security
    pdf.ApplyWatermark("<h2 style='color:red;opacity:0.3'>CONFIDENTIAL</h2>", 30, VerticalAlignment.Middle, HorizontalAlignment.Center);

    // This header tells the browser to display the file inline.
    // We use IHeaderDictionary indexer to prevent ArgumentException.
    HttpContext.Response.Headers["Content-Disposition"] = "inline; filename=invoice.pdf";
    HttpContext.Response.Headers["X-Content-Type-Options"] = "nosniff";
    HttpContext.Response.Headers["Content-Security-Policy"] = "default-src 'self'";

    return File(pdf.BinaryData, "application/pdf");
}

public IActionResult PrintUsingClientWrapper()
{
    var printUrl = Url.Action(nameof(GetRawPrintablePdf));
    // Use a simple HTML/JavaScript wrapper to force the print dialog
    var html = new StringBuilder();
    html.AppendLine("<!DOCTYPE html>");
    html.AppendLine("<html lang=\"en\">");
    html.AppendLine("<head>");
    html.AppendLine("    <title>Print Document</title>");
    html.AppendLine("    <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'self' 'unsafe-inline'\">");
    html.AppendLine("</head>");
    html.AppendLine("<body>");
    // Load the PDF from the 'GetRawPrintablePdf' action into an invisible iframe.
    html.AppendLine($"    <iframe src='{printUrl}' style='position:absolute; top:0; left:0; width:100%; height:100%; border:none;'></iframe>");
    html.AppendLine("    <script>");
    // Wait for the iframe (and thus the PDF) to load, then trigger the print dialog.
    html.AppendLine("        window.onload = function() {");
    html.AppendLine("            // Wait briefly to ensure the iframe content is rendered before printing.");
    html.AppendLine("            setTimeout(function() {");
    html.AppendLine("                window.print();");
    html.AppendLine("                // Log print attempt for audit");
    html.AppendLine("                console.log('Print dialog triggered at: ' + new Date().toISOString());");
    html.AppendLine("            }, 100);");
    html.AppendLine("        };");
    html.AppendLine("    </script>");
    html.AppendLine("</body>");
    html.AppendLine("</html>");
    return Content(html.ToString(), "text/html");
}

private string GetInvoiceHtml()
{
    // Build HTML with proper structure and security considerations
    return @"
    <html>
    <head>
        <style>
            body { font-family: Arial, sans-serif; }
            .header { font-weight: bold; color: #1e40af; border-bottom: 2px solid #3b82f6; padding-bottom: 5px; }
            .content { padding-top: 10px; }
            .footer { margin-top: 20px; font-size: 10px; color: #666; }
            @media print {
                .no-print { display: none; }
            }
        </style>
    </head>
    <body>
        <div class='header'>Invoice Summary (Client View)</div>
        <div class='content'>
            <p>Document content: This file is improve for printing.</p>
            <p>Total Amount: <b>$799.00</b></p>
        </div>
    </body>
    </html>";
}
Imports System.Text
Imports Microsoft.AspNetCore.Mvc

Public Class PdfController
    Inherits Controller

    Public Function GetRawPrintablePdf() As IActionResult
        Dim renderer = New ChromePdfRenderer()

        ' Apply enterprise security settings
        renderer.RenderingOptions.EnableJavaScript = False
        renderer.RenderingOptions.CreatePdfFormsFromHtml = False

        Dim pdf = renderer.RenderHtmlAsPdf(GetInvoiceHtml())

        ' Apply document security for client-side viewing
        pdf.SecuritySettings.AllowUserPrinting = True
        pdf.SecuritySettings.AllowUserEditing = False
        pdf.SecuritySettings.AllowUserCopyPasteContent = False
        pdf.SecuritySettings.AllowUserAnnotations = False
        pdf.SecuritySettings.AllowUserFormData = False

        ' Add watermark for security
        pdf.ApplyWatermark("<h2 style='color:red;opacity:0.3'>CONFIDENTIAL</h2>", 30, VerticalAlignment.Middle, HorizontalAlignment.Center)

        ' This header tells the browser to display the file inline.
        ' We use IHeaderDictionary indexer to prevent ArgumentException.
        HttpContext.Response.Headers("Content-Disposition") = "inline; filename=invoice.pdf"
        HttpContext.Response.Headers("X-Content-Type-Options") = "nosniff"
        HttpContext.Response.Headers("Content-Security-Policy") = "default-src 'self'"

        Return File(pdf.BinaryData, "application/pdf")
    End Function

    Public Function PrintUsingClientWrapper() As IActionResult
        Dim printUrl = Url.Action(NameOf(GetRawPrintablePdf))
        ' Use a simple HTML/JavaScript wrapper to force the print dialog
        Dim html = New StringBuilder()
        html.AppendLine("<!DOCTYPE html>")
        html.AppendLine("<html lang=""en"">")
        html.AppendLine("<head>")
        html.AppendLine("    <title>Print Document</title>")
        html.AppendLine("    <meta http-equiv=""Content-Security-Policy"" content=""default-src 'self' 'unsafe-inline'"">")
        html.AppendLine("</head>")
        html.AppendLine("<body>")
        ' Load the PDF from the 'GetRawPrintablePdf' action into an invisible iframe.
        html.AppendLine($"    <iframe src='{printUrl}' style='position:absolute; top:0; left:0; width:100%; height:100%; border:none;'></iframe>")
        html.AppendLine("    <script>")
        ' Wait for the iframe (and thus the PDF) to load, then trigger the print dialog.
        html.AppendLine("        window.onload = function() {")
        html.AppendLine("            // Wait briefly to ensure the iframe content is rendered before printing.")
        html.AppendLine("            setTimeout(function() {")
        html.AppendLine("                window.print();")
        html.AppendLine("                // Log print attempt for audit")
        html.AppendLine("                console.log('Print dialog triggered at: ' + new Date().toISOString());")
        html.AppendLine("            }, 100);")
        html.AppendLine("        };")
        html.AppendLine("    </script>")
        html.AppendLine("</body>")
        html.AppendLine("</html>")
        Return Content(html.ToString(), "text/html")
    End Function

    Private Function GetInvoiceHtml() As String
        ' Build HTML with proper structure and security considerations
        Return "
    <html>
    <head>
        <style>
            body { font-family: Arial, sans-serif; }
            .header { font-weight: bold; color: #1e40af; border-bottom: 2px solid #3b82f6; padding-bottom: 5px; }
            .content { padding-top: 10px; }
            .footer { margin-top: 20px; font-size: 10px; color: #666; }
            @media print {
                .no-print { display: none; }
            }
        </style>
    </head>
    <body>
        <div class='header'>Invoice Summary (Client View)</div>
        <div class='content'>
            <p>Document content: This file is improve for printing.</p>
            <p>Total Amount: <b>$799.00</b></p>
        </div>
    </body>
    </html>"
    End Function
End Class
$vbLabelText   $csharpLabel

The PDF document opens in the browser where users can trigger printing through their default printer using standard browser print dialogs. This approach is superior to making a direct server-side request for printing and maintains security compliance through proper content security policies and watermarking. For improve functionality, consider implementing PDF viewing components or PDF to image conversion for preview purposes.

How Does Client-Side Printing Ensure Data Security?

Microsoft Edge print dialog showing a PDF invoice preview with $749.00 total and various print settings on the right side

How Do I Work with Various Source Code Inputs?

IronPDF flexibly handles various source code inputs while maintaining data sovereignty, important for developers creating dynamic printing code in enterprise environments. The library supports HTML files, URLs, HTML strings, and even Markdown content:

public async Task<IActionResult> PrintFromMultipleSources()
{
    var renderer = new ChromePdfRenderer();

    // Configure for security compliance
    renderer.RenderingOptions.EnableJavaScript = false;
    renderer.RenderingOptions.Timeout = 30; // 30 second timeout

    // From URL with authentication
    renderer.LoginCredentials = new ChromeHttpLoginCredentials()
    {
        NetworkUsername = "serviceaccount",
        NetworkPassword = "securepassword"
    };
    var pdfFromUrl = await renderer.RenderUrlAsPdfAsync("___PROTECTED_URL_126___");

    // From HTML file path with template validation
    var templatePath = @"Templates\report.html";
    if (!IsValidTemplate(templatePath))
    {
        return BadRequest("Invalid template");
    }
    var pdfFromFile = renderer.RenderHtmlFileAsPdf(templatePath);

    // From memory stream with sanitization
    var sanitizedHtml = SanitizeHtml("<h2>PDF from Memory Stream</h2><p>This content was sanitized for security.</p>");
    var pdfToStream = renderer.RenderHtmlAsPdf(sanitizedHtml);

    // Now, write the valid PDF bytes to the stream with encryption
    using (var stream = new MemoryStream(pdfToStream.BinaryData))
    {
        var pdfFromStream = new PdfDocument(stream);

        // Apply encryption for data at rest
        pdfFromStream.SecuritySettings.OwnerPassword = GenerateSecurePassword();
        pdfFromStream.SecuritySettings.UserPassword = "userpass";

        // Example: Print the PDF loaded from the stream
        // pdfFromStream.Print();
    }

    // Print with audit trail
    var printJobId = Guid.NewGuid().ToString();
    LogMultiSourcePrint(printJobId, new[] { "URL", "Template", "Stream" });

    pdfFromUrl.Print();

    // Logging the various files handled
    var fileList = new List<string> { "URL", "File Path", "Memory Stream" };

    return Ok(new
    {
        message = "PDF documents processed and 'example.com' printed to default server printer.",
        jobId = printJobId,
        sources = fileList,
        timestamp = DateTime.UtcNow
    });
}

private bool IsValidTemplate(string path)
{
    // Implement template validation logic
    // Check for path traversal, allowed directories, etc.
    return true;
}

private string SanitizeHtml(string html)
{
    // Implement HTML sanitization for security
    // Remove scripts, dangerous tags, etc.
    return html;
}

private string GenerateSecurePassword()
{
    // Generate cryptographically secure password
    return Guid.NewGuid().ToString();
}
public async Task<IActionResult> PrintFromMultipleSources()
{
    var renderer = new ChromePdfRenderer();

    // Configure for security compliance
    renderer.RenderingOptions.EnableJavaScript = false;
    renderer.RenderingOptions.Timeout = 30; // 30 second timeout

    // From URL with authentication
    renderer.LoginCredentials = new ChromeHttpLoginCredentials()
    {
        NetworkUsername = "serviceaccount",
        NetworkPassword = "securepassword"
    };
    var pdfFromUrl = await renderer.RenderUrlAsPdfAsync("___PROTECTED_URL_126___");

    // From HTML file path with template validation
    var templatePath = @"Templates\report.html";
    if (!IsValidTemplate(templatePath))
    {
        return BadRequest("Invalid template");
    }
    var pdfFromFile = renderer.RenderHtmlFileAsPdf(templatePath);

    // From memory stream with sanitization
    var sanitizedHtml = SanitizeHtml("<h2>PDF from Memory Stream</h2><p>This content was sanitized for security.</p>");
    var pdfToStream = renderer.RenderHtmlAsPdf(sanitizedHtml);

    // Now, write the valid PDF bytes to the stream with encryption
    using (var stream = new MemoryStream(pdfToStream.BinaryData))
    {
        var pdfFromStream = new PdfDocument(stream);

        // Apply encryption for data at rest
        pdfFromStream.SecuritySettings.OwnerPassword = GenerateSecurePassword();
        pdfFromStream.SecuritySettings.UserPassword = "userpass";

        // Example: Print the PDF loaded from the stream
        // pdfFromStream.Print();
    }

    // Print with audit trail
    var printJobId = Guid.NewGuid().ToString();
    LogMultiSourcePrint(printJobId, new[] { "URL", "Template", "Stream" });

    pdfFromUrl.Print();

    // Logging the various files handled
    var fileList = new List<string> { "URL", "File Path", "Memory Stream" };

    return Ok(new
    {
        message = "PDF documents processed and 'example.com' printed to default server printer.",
        jobId = printJobId,
        sources = fileList,
        timestamp = DateTime.UtcNow
    });
}

private bool IsValidTemplate(string path)
{
    // Implement template validation logic
    // Check for path traversal, allowed directories, etc.
    return true;
}

private string SanitizeHtml(string html)
{
    // Implement HTML sanitization for security
    // Remove scripts, dangerous tags, etc.
    return html;
}

private string GenerateSecurePassword()
{
    // Generate cryptographically secure password
    return Guid.NewGuid().ToString();
}
Imports System
Imports System.IO
Imports System.Threading.Tasks
Imports Microsoft.AspNetCore.Mvc

Public Class YourController
    Inherits Controller

    Public Async Function PrintFromMultipleSources() As Task(Of IActionResult)
        Dim renderer = New ChromePdfRenderer()

        ' Configure for security compliance
        renderer.RenderingOptions.EnableJavaScript = False
        renderer.RenderingOptions.Timeout = 30 ' 30 second timeout

        ' From URL with authentication
        renderer.LoginCredentials = New ChromeHttpLoginCredentials() With {
            .NetworkUsername = "serviceaccount",
            .NetworkPassword = "securepassword"
        }
        Dim pdfFromUrl = Await renderer.RenderUrlAsPdfAsync("___PROTECTED_URL_126___")

        ' From HTML file path with template validation
        Dim templatePath = "Templates\report.html"
        If Not IsValidTemplate(templatePath) Then
            Return BadRequest("Invalid template")
        End If
        Dim pdfFromFile = renderer.RenderHtmlFileAsPdf(templatePath)

        ' From memory stream with sanitization
        Dim sanitizedHtml = SanitizeHtml("<h2>PDF from Memory Stream</h2><p>This content was sanitized for security.</p>")
        Dim pdfToStream = renderer.RenderHtmlAsPdf(sanitizedHtml)

        ' Now, write the valid PDF bytes to the stream with encryption
        Using stream = New MemoryStream(pdfToStream.BinaryData)
            Dim pdfFromStream = New PdfDocument(stream)

            ' Apply encryption for data at rest
            pdfFromStream.SecuritySettings.OwnerPassword = GenerateSecurePassword()
            pdfFromStream.SecuritySettings.UserPassword = "userpass"

            ' Example: Print the PDF loaded from the stream
            ' pdfFromStream.Print()
        End Using

        ' Print with audit trail
        Dim printJobId = Guid.NewGuid().ToString()
        LogMultiSourcePrint(printJobId, New String() {"URL", "Template", "Stream"})

        pdfFromUrl.Print()

        ' Logging the various files handled
        Dim fileList = New List(Of String) From {"URL", "File Path", "Memory Stream"}

        Return Ok(New With {
            .message = "PDF documents processed and 'example.com' printed to default server printer.",
            .jobId = printJobId,
            .sources = fileList,
            .timestamp = DateTime.UtcNow
        })
    End Function

    Private Function IsValidTemplate(path As String) As Boolean
        ' Implement template validation logic
        ' Check for path traversal, allowed directories, etc.
        Return True
    End Function

    Private Function SanitizeHtml(html As String) As String
        ' Implement HTML sanitization for security
        ' Remove scripts, dangerous tags, etc.
        Return html
    End Function

    Private Function GenerateSecurePassword() As String
        ' Generate cryptographically secure password
        Return Guid.NewGuid().ToString()
    End Function

    Private Sub LogMultiSourcePrint(printJobId As String, sources As String())
        ' Implement logging logic
    End Sub
End Class
$vbLabelText   $csharpLabel

The lines above demonstrate how to create a new list of file sources handled with security best practices. Each method preserves the document structure and graphics while maintaining print quality and compliance requirements. The implementation includes authentication, input validation, and encryption for data protection. For additional input sources, IronPDF supports DOCX files, RTF documents, XML data, and image formats.

After processing PDF documents, Windows displays this save dialog allowing users to save the print output while confirming the documents were sent to the default printer

How Do I Implement Error Handling and Logging?

Implement reliable error handling for production environments with compliance logging. IronPDF provides complete troubleshooting guides and native exception handling:

using System.Drawing.Printing; // For PrinterSettings
// ... other usings ...
public IActionResult SafePrint(string documentId)
{
    var correlationId = Guid.NewGuid().ToString();

    try
    {
        // Log print attempt for audit trail
        LogPrintAttempt(correlationId, documentId, User.Identity.Name);

        var pdf = LoadPdfDocument(documentId);

        // Verify user permissions
        if (!HasPrintPermission(User.Identity.Name, documentId))
        {
            LogUnauthorizedAccess(correlationId, documentId, User.Identity.Name);
            return Forbid("User lacks print permissions for this document");
        }

        // Verify printer availability with failover
        var availablePrinters = PrinterSettings.InstalledPrinters.Cast<string>().ToList();
        var targetPrinter = GetTargetPrinter(availablePrinters);

        if (string.IsNullOrEmpty(targetPrinter))
        {
            // Log error and handle gracefully
            LogPrinterUnavailable(correlationId, availablePrinters);
            return BadRequest(new
            {
                error = "Printer not available",
                availablePrinters = availablePrinters,
                correlationId = correlationId
            });
        }

        // Apply print settings
        var printDoc = pdf.GetPrintDocument();
        printDoc.PrinterSettings.PrinterName = targetPrinter;

        // Execute print with monitoring
        printDoc.Print();

        // Log successful output for compliance
        LogPrintSuccess(correlationId, documentId, targetPrinter);

        return Ok(new
        {
            message = $"Document {documentId} printed successfully",
            printer = targetPrinter,
            correlationId = correlationId,
            timestamp = DateTime.UtcNow
        });
    }
    catch (UnauthorizedAccessException uae)
    {
        LogSecurityException(correlationId, uae);
        return StatusCode(403, new { error = "Access denied", correlationId = correlationId });
    }
    catch (Exception ex)
    {
        // Log error details with stack trace for debugging
        LogPrintError(correlationId, ex);
        return StatusCode(500, new
        {
            error = "Printing failed",
            correlationId = correlationId,
            message = "Please contact support with the correlation ID"
        });
    }
}

private string GetTargetPrinter(List<string> availablePrinters)
{
    // Implement printer selection logic with failover
    var primaryPrinter = "Primary Network Printer";
    var fallbackPrinter = "Secondary Printer";

    if (availablePrinters.Contains(primaryPrinter))
        return primaryPrinter;
    else if (availablePrinters.Contains(fallbackPrinter))
        return fallbackPrinter;
    else
        return availablePrinters.FirstOrDefault();
}

private bool HasPrintPermission(string userName, string documentId)
{
    // Implement your permission checking logic
    // This could integrate with your enterprise authorization system
    return true; // Simplified for example
}

private PdfDocument LoadPdfDocument(string documentId)
{
    // Load document with security checks
    var filePath = GetSecureFilePath(documentId);
    return PdfDocument.FromFile(filePath);
}

private string GetSecureFilePath(string documentId)
{
    // Implement secure file path resolution
    // Prevent path traversal attacks
    return Path.Combine(GetSecureDocumentRoot(), documentId + ".pdf");
}
using System.Drawing.Printing; // For PrinterSettings
// ... other usings ...
public IActionResult SafePrint(string documentId)
{
    var correlationId = Guid.NewGuid().ToString();

    try
    {
        // Log print attempt for audit trail
        LogPrintAttempt(correlationId, documentId, User.Identity.Name);

        var pdf = LoadPdfDocument(documentId);

        // Verify user permissions
        if (!HasPrintPermission(User.Identity.Name, documentId))
        {
            LogUnauthorizedAccess(correlationId, documentId, User.Identity.Name);
            return Forbid("User lacks print permissions for this document");
        }

        // Verify printer availability with failover
        var availablePrinters = PrinterSettings.InstalledPrinters.Cast<string>().ToList();
        var targetPrinter = GetTargetPrinter(availablePrinters);

        if (string.IsNullOrEmpty(targetPrinter))
        {
            // Log error and handle gracefully
            LogPrinterUnavailable(correlationId, availablePrinters);
            return BadRequest(new
            {
                error = "Printer not available",
                availablePrinters = availablePrinters,
                correlationId = correlationId
            });
        }

        // Apply print settings
        var printDoc = pdf.GetPrintDocument();
        printDoc.PrinterSettings.PrinterName = targetPrinter;

        // Execute print with monitoring
        printDoc.Print();

        // Log successful output for compliance
        LogPrintSuccess(correlationId, documentId, targetPrinter);

        return Ok(new
        {
            message = $"Document {documentId} printed successfully",
            printer = targetPrinter,
            correlationId = correlationId,
            timestamp = DateTime.UtcNow
        });
    }
    catch (UnauthorizedAccessException uae)
    {
        LogSecurityException(correlationId, uae);
        return StatusCode(403, new { error = "Access denied", correlationId = correlationId });
    }
    catch (Exception ex)
    {
        // Log error details with stack trace for debugging
        LogPrintError(correlationId, ex);
        return StatusCode(500, new
        {
            error = "Printing failed",
            correlationId = correlationId,
            message = "Please contact support with the correlation ID"
        });
    }
}

private string GetTargetPrinter(List<string> availablePrinters)
{
    // Implement printer selection logic with failover
    var primaryPrinter = "Primary Network Printer";
    var fallbackPrinter = "Secondary Printer";

    if (availablePrinters.Contains(primaryPrinter))
        return primaryPrinter;
    else if (availablePrinters.Contains(fallbackPrinter))
        return fallbackPrinter;
    else
        return availablePrinters.FirstOrDefault();
}

private bool HasPrintPermission(string userName, string documentId)
{
    // Implement your permission checking logic
    // This could integrate with your enterprise authorization system
    return true; // Simplified for example
}

private PdfDocument LoadPdfDocument(string documentId)
{
    // Load document with security checks
    var filePath = GetSecureFilePath(documentId);
    return PdfDocument.FromFile(filePath);
}

private string GetSecureFilePath(string documentId)
{
    // Implement secure file path resolution
    // Prevent path traversal attacks
    return Path.Combine(GetSecureDocumentRoot(), documentId + ".pdf");
}
Imports System.Drawing.Printing ' For PrinterSettings
' ... other imports ...
Public Function SafePrint(documentId As String) As IActionResult
    Dim correlationId = Guid.NewGuid().ToString()

    Try
        ' Log print attempt for audit trail
        LogPrintAttempt(correlationId, documentId, User.Identity.Name)

        Dim pdf = LoadPdfDocument(documentId)

        ' Verify user permissions
        If Not HasPrintPermission(User.Identity.Name, documentId) Then
            LogUnauthorizedAccess(correlationId, documentId, User.Identity.Name)
            Return Forbid("User lacks print permissions for this document")
        End If

        ' Verify printer availability with failover
        Dim availablePrinters = PrinterSettings.InstalledPrinters.Cast(Of String)().ToList()
        Dim targetPrinter = GetTargetPrinter(availablePrinters)

        If String.IsNullOrEmpty(targetPrinter) Then
            ' Log error and handle gracefully
            LogPrinterUnavailable(correlationId, availablePrinters)
            Return BadRequest(New With {
                .error = "Printer not available",
                .availablePrinters = availablePrinters,
                .correlationId = correlationId
            })
        End If

        ' Apply print settings
        Dim printDoc = pdf.GetPrintDocument()
        printDoc.PrinterSettings.PrinterName = targetPrinter

        ' Execute print with monitoring
        printDoc.Print()

        ' Log successful output for compliance
        LogPrintSuccess(correlationId, documentId, targetPrinter)

        Return Ok(New With {
            .message = $"Document {documentId} printed successfully",
            .printer = targetPrinter,
            .correlationId = correlationId,
            .timestamp = DateTime.UtcNow
        })
    Catch uae As UnauthorizedAccessException
        LogSecurityException(correlationId, uae)
        Return StatusCode(403, New With {.error = "Access denied", .correlationId = correlationId})
    Catch ex As Exception
        ' Log error details with stack trace for debugging
        LogPrintError(correlationId, ex)
        Return StatusCode(500, New With {
            .error = "Printing failed",
            .correlationId = correlationId,
            .message = "Please contact support with the correlation ID"
        })
    End Try
End Function

Private Function GetTargetPrinter(availablePrinters As List(Of String)) As String
    ' Implement printer selection logic with failover
    Dim primaryPrinter = "Primary Network Printer"
    Dim fallbackPrinter = "Secondary Printer"

    If availablePrinters.Contains(primaryPrinter) Then
        Return primaryPrinter
    ElseIf availablePrinters.Contains(fallbackPrinter) Then
        Return fallbackPrinter
    Else
        Return availablePrinters.FirstOrDefault()
    End If
End Function

Private Function HasPrintPermission(userName As String, documentId As String) As Boolean
    ' Implement your permission checking logic
    ' This could integrate with your enterprise authorization system
    Return True ' Simplified for example
End Function

Private Function LoadPdfDocument(documentId As String) As PdfDocument
    ' Load document with security checks
    Dim filePath = GetSecureFilePath(documentId)
    Return PdfDocument.FromFile(filePath)
End Function

Private Function GetSecureFilePath(documentId As String) As String
    ' Implement secure file path resolution
    ' Prevent path traversal attacks
    Return Path.Combine(GetSecureDocumentRoot(), documentId & ".pdf")
End Function
$vbLabelText   $csharpLabel

This ensures reliable printing even when system resources are unavailable and is a key part of your enterprise print service. The implementation includes correlation IDs for tracking requests across distributed systems and complete security checks. For troubleshooting specific issues, IronPDF provides detailed log files and engineering support.

What Happens When Printers Are Unavailable?

If the printer specified in the code isn't available, the code will provide this error message:

A common printer error message that users may encounter when attempting to print documents

How Can I Monitor Successful Print Jobs?

If your PDF is printed successfully, you should see a confirmation message such as:

Windows command prompt displaying successful PDF print confirmation for a file located in a nested Desktop folder structure

What Advanced Configuration Options Are Available?

IronPDF's folder structure supports complex scenarios required by enterprise architectures. The version of the IronPDF library you use may affect these settings. The library offers rendering options for performance optimization and memory management:

public IActionResult ConfigureAdvancedPrinting(object sender, EventArgs e)
{
    var renderer = new ChromePdfRenderer();

    // Configure rendering options for compliance
    renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
    renderer.RenderingOptions.EnableJavaScript = false; // Security best practice
    renderer.RenderingOptions.RenderDelay = 500; // Wait for dynamic content
    renderer.RenderingOptions.Timeout = 60; // 60 second timeout for large documents
    renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

    // Configure for high-quality output
    renderer.RenderingOptions.PrintHtmlBackgrounds = true;
    renderer.RenderingOptions.CreatePdfFormsFromHtml = false; // Disable for security

    // Set DPI for print quality
    renderer.RenderingOptions.DpiResolution = 300;

    // Generate complex PDF documents
    var pdf = renderer.RenderHtmlAsPdf(GetDynamicContent());

    // Apply security settings for enterprise compliance
    pdf.SecuritySettings.AllowUserPrinting = true;
    pdf.SecuritySettings.AllowUserEditing = false;
    pdf.SecuritySettings.AllowUserCopyPasteContent = false;
    pdf.SecuritySettings.AllowUserAnnotations = false;
    pdf.SecuritySettings.AllowUserFormData = false;

    // Set strong encryption
    pdf.SecuritySettings.OwnerPassword = GenerateStrongPassword();
    pdf.SecuritySettings.UserPassword = "userpassword";

    // Add complete metadata for compliance
    pdf.MetaData.Author = "Enterprise Document System";
    pdf.MetaData.Creator = "IronPDF Enterprise Edition";
    pdf.MetaData.Subject = "Compliance Document";
    pdf.MetaData.Keywords = "enterprise,secure,compliant";
    pdf.MetaData.Producer = $"IronPDF {IronPdf.License.LicensedTo}";
    pdf.MetaData.CreationDate = DateTime.UtcNow;
    pdf.MetaData.ModifiedDate = DateTime.UtcNow;

    // Add custom metadata for tracking
    pdf.MetaData.CustomProperties.Add("DocumentClassification", "Confidential");
    pdf.MetaData.CustomProperties.Add("RetentionPolicy", "7years");
    pdf.MetaData.CustomProperties.Add("ComplianceFramework", "SOC2-HIPAA");

    // Apply digital signature for integrity
    if (RequiresDigitalSignature())
    {
        pdf.SignWithFile("/path/to/certificate.pfx", "certificatePassword");
    }

    return File(pdf.BinaryData, "application/pdf");
}

private string GenerateStrongPassword()
{
    // Implement strong password generation
    using (var rng = System.Security.Cryptography.RandomNumberGenerator.Create())
    {
        var bytes = new byte[32];
        rng.GetBytes(bytes);
        return Convert.ToBase64String(bytes);
    }
}

private bool RequiresDigitalSignature()
{
    // Business logic to determine if signature is required
    return true;
}

private string GetDynamicContent()
{
    // Generate content with security headers
    return @"
    <!DOCTYPE html>
    <html>
    <head>
        <meta charset='utf-8'>
        <meta http-equiv='X-UA-Compatible' content='IE=edge'>
        <style>
            @page { size: A4; margin: 1cm; }
            body { font-family: Arial, sans-serif; }
            .confidential { color: red; font-weight: bold; }
        </style>
    </head>
    <body>
        <h1>Enterprise Document</h1>
        <p class='confidential'>CONFIDENTIAL - INTERNAL USE ONLY</p>
        <p>Generated: " + DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss UTC") + @"</p>
    </body>
    </html>";
}
public IActionResult ConfigureAdvancedPrinting(object sender, EventArgs e)
{
    var renderer = new ChromePdfRenderer();

    // Configure rendering options for compliance
    renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
    renderer.RenderingOptions.EnableJavaScript = false; // Security best practice
    renderer.RenderingOptions.RenderDelay = 500; // Wait for dynamic content
    renderer.RenderingOptions.Timeout = 60; // 60 second timeout for large documents
    renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

    // Configure for high-quality output
    renderer.RenderingOptions.PrintHtmlBackgrounds = true;
    renderer.RenderingOptions.CreatePdfFormsFromHtml = false; // Disable for security

    // Set DPI for print quality
    renderer.RenderingOptions.DpiResolution = 300;

    // Generate complex PDF documents
    var pdf = renderer.RenderHtmlAsPdf(GetDynamicContent());

    // Apply security settings for enterprise compliance
    pdf.SecuritySettings.AllowUserPrinting = true;
    pdf.SecuritySettings.AllowUserEditing = false;
    pdf.SecuritySettings.AllowUserCopyPasteContent = false;
    pdf.SecuritySettings.AllowUserAnnotations = false;
    pdf.SecuritySettings.AllowUserFormData = false;

    // Set strong encryption
    pdf.SecuritySettings.OwnerPassword = GenerateStrongPassword();
    pdf.SecuritySettings.UserPassword = "userpassword";

    // Add complete metadata for compliance
    pdf.MetaData.Author = "Enterprise Document System";
    pdf.MetaData.Creator = "IronPDF Enterprise Edition";
    pdf.MetaData.Subject = "Compliance Document";
    pdf.MetaData.Keywords = "enterprise,secure,compliant";
    pdf.MetaData.Producer = $"IronPDF {IronPdf.License.LicensedTo}";
    pdf.MetaData.CreationDate = DateTime.UtcNow;
    pdf.MetaData.ModifiedDate = DateTime.UtcNow;

    // Add custom metadata for tracking
    pdf.MetaData.CustomProperties.Add("DocumentClassification", "Confidential");
    pdf.MetaData.CustomProperties.Add("RetentionPolicy", "7years");
    pdf.MetaData.CustomProperties.Add("ComplianceFramework", "SOC2-HIPAA");

    // Apply digital signature for integrity
    if (RequiresDigitalSignature())
    {
        pdf.SignWithFile("/path/to/certificate.pfx", "certificatePassword");
    }

    return File(pdf.BinaryData, "application/pdf");
}

private string GenerateStrongPassword()
{
    // Implement strong password generation
    using (var rng = System.Security.Cryptography.RandomNumberGenerator.Create())
    {
        var bytes = new byte[32];
        rng.GetBytes(bytes);
        return Convert.ToBase64String(bytes);
    }
}

private bool RequiresDigitalSignature()
{
    // Business logic to determine if signature is required
    return true;
}

private string GetDynamicContent()
{
    // Generate content with security headers
    return @"
    <!DOCTYPE html>
    <html>
    <head>
        <meta charset='utf-8'>
        <meta http-equiv='X-UA-Compatible' content='IE=edge'>
        <style>
            @page { size: A4; margin: 1cm; }
            body { font-family: Arial, sans-serif; }
            .confidential { color: red; font-weight: bold; }
        </style>
    </head>
    <body>
        <h1>Enterprise Document</h1>
        <p class='confidential'>CONFIDENTIAL - INTERNAL USE ONLY</p>
        <p>Generated: " + DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss UTC") + @"</p>
    </body>
    </html>";
}
Imports System
Imports System.Security.Cryptography
Imports IronPdf

Public Class DocumentController

    Public Function ConfigureAdvancedPrinting(sender As Object, e As EventArgs) As IActionResult
        Dim renderer As New ChromePdfRenderer()

        ' Configure rendering options for compliance
        renderer.RenderingOptions.PaperSize = PdfPaperSize.A4
        renderer.RenderingOptions.EnableJavaScript = False ' Security best practice
        renderer.RenderingOptions.RenderDelay = 500 ' Wait for dynamic content
        renderer.RenderingOptions.Timeout = 60 ' 60 second timeout for large documents
        renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print

        ' Configure for high-quality output
        renderer.RenderingOptions.PrintHtmlBackgrounds = True
        renderer.RenderingOptions.CreatePdfFormsFromHtml = False ' Disable for security

        ' Set DPI for print quality
        renderer.RenderingOptions.DpiResolution = 300

        ' Generate complex PDF documents
        Dim pdf = renderer.RenderHtmlAsPdf(GetDynamicContent())

        ' Apply security settings for enterprise compliance
        pdf.SecuritySettings.AllowUserPrinting = True
        pdf.SecuritySettings.AllowUserEditing = False
        pdf.SecuritySettings.AllowUserCopyPasteContent = False
        pdf.SecuritySettings.AllowUserAnnotations = False
        pdf.SecuritySettings.AllowUserFormData = False

        ' Set strong encryption
        pdf.SecuritySettings.OwnerPassword = GenerateStrongPassword()
        pdf.SecuritySettings.UserPassword = "userpassword"

        ' Add complete metadata for compliance
        pdf.MetaData.Author = "Enterprise Document System"
        pdf.MetaData.Creator = "IronPDF Enterprise Edition"
        pdf.MetaData.Subject = "Compliance Document"
        pdf.MetaData.Keywords = "enterprise,secure,compliant"
        pdf.MetaData.Producer = $"IronPDF {IronPdf.License.LicensedTo}"
        pdf.MetaData.CreationDate = DateTime.UtcNow
        pdf.MetaData.ModifiedDate = DateTime.UtcNow

        ' Add custom metadata for tracking
        pdf.MetaData.CustomProperties.Add("DocumentClassification", "Confidential")
        pdf.MetaData.CustomProperties.Add("RetentionPolicy", "7years")
        pdf.MetaData.CustomProperties.Add("ComplianceFramework", "SOC2-HIPAA")

        ' Apply digital signature for integrity
        If RequiresDigitalSignature() Then
            pdf.SignWithFile("/path/to/certificate.pfx", "certificatePassword")
        End If

        Return File(pdf.BinaryData, "application/pdf")
    End Function

    Private Function GenerateStrongPassword() As String
        ' Implement strong password generation
        Using rng As RandomNumberGenerator = RandomNumberGenerator.Create()
            Dim bytes(31) As Byte
            rng.GetBytes(bytes)
            Return Convert.ToBase64String(bytes)
        End Using
    End Function

    Private Function RequiresDigitalSignature() As Boolean
        ' Business logic to determine if signature is required
        Return True
    End Function

    Private Function GetDynamicContent() As String
        ' Generate content with security headers
        Return "
    <!DOCTYPE html>
    <html>
    <head>
        <meta charset='utf-8'>
        <meta http-equiv='X-UA-Compatible' content='IE=edge'>
        <style>
            @page { size: A4; margin: 1cm; }
            body { font-family: Arial, sans-serif; }
            .confidential { color: red; font-weight: bold; }
        </style>
    </head>
    <body>
        <h1>Enterprise Document</h1>
        <p class='confidential'>CONFIDENTIAL - INTERNAL USE ONLY</p>
        <p>Generated: " & DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss UTC") & "</p>
    </body>
    </html>"
    End Function

End Class
$vbLabelText   $csharpLabel

The command to print is simply pdf.Print() once the document is generated with all security configurations applied. This complete approach ensures compliance with enterprise security standards while maintaining document integrity through digital signatures and encryption. For advanced scenarios, consider PDF/A compliance for long-term archival, PDF/UA for accessibility compliance, and table of contents generation for complex documents.

// Additional example: Implementing batch printing with progress tracking
public async Task<IActionResult> BatchPrintDocuments(List<string> documentIds)
{
    var results = new List<PrintResult>();
    var renderer = new ChromePdfRenderer();

    // Configure for batch processing
    renderer.RenderingOptions.Timeout = 120; // Extended timeout for batch
    renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

    foreach (var docId in documentIds)
    {
        try
        {
            var htmlContent = await GetDocumentHtmlAsync(docId);
            var pdf = renderer.RenderHtmlAsPdf(htmlContent);

            // Apply batch processing optimizations
            pdf.CompressImages(90); // Compress for faster processing

            // Print with tracking
            var printJob = new PrintJob { DocumentId = docId, StartTime = DateTime.UtcNow };
            pdf.Print();
            printJob.EndTime = DateTime.UtcNow;
            printJob.Status = PrintStatus.Success;

            results.Add(printJob);
        }
        catch (Exception ex)
        {
            results.Add(new PrintJob 
            { 
                DocumentId = docId, 
                Status = PrintStatus.Failed, 
                Error = ex.Message 
            });
        }
    }

    return Json(new
    {
        totalDocuments = documentIds.Count,
        successful = results.Count(r => r.Status == PrintStatus.Success),
        failed = results.Count(r => r.Status == PrintStatus.Failed),
        results = results
    });
}
// Additional example: Implementing batch printing with progress tracking
public async Task<IActionResult> BatchPrintDocuments(List<string> documentIds)
{
    var results = new List<PrintResult>();
    var renderer = new ChromePdfRenderer();

    // Configure for batch processing
    renderer.RenderingOptions.Timeout = 120; // Extended timeout for batch
    renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

    foreach (var docId in documentIds)
    {
        try
        {
            var htmlContent = await GetDocumentHtmlAsync(docId);
            var pdf = renderer.RenderHtmlAsPdf(htmlContent);

            // Apply batch processing optimizations
            pdf.CompressImages(90); // Compress for faster processing

            // Print with tracking
            var printJob = new PrintJob { DocumentId = docId, StartTime = DateTime.UtcNow };
            pdf.Print();
            printJob.EndTime = DateTime.UtcNow;
            printJob.Status = PrintStatus.Success;

            results.Add(printJob);
        }
        catch (Exception ex)
        {
            results.Add(new PrintJob 
            { 
                DocumentId = docId, 
                Status = PrintStatus.Failed, 
                Error = ex.Message 
            });
        }
    }

    return Json(new
    {
        totalDocuments = documentIds.Count,
        successful = results.Count(r => r.Status == PrintStatus.Success),
        failed = results.Count(r => r.Status == PrintStatus.Failed),
        results = results
    });
}
Imports System
Imports System.Collections.Generic
Imports System.Threading.Tasks

Public Class DocumentPrinter
    Public Async Function BatchPrintDocuments(documentIds As List(Of String)) As Task(Of IActionResult)
        Dim results As New List(Of PrintResult)()
        Dim renderer As New ChromePdfRenderer()

        ' Configure for batch processing
        renderer.RenderingOptions.Timeout = 120 ' Extended timeout for batch
        renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print

        For Each docId In documentIds
            Try
                Dim htmlContent As String = Await GetDocumentHtmlAsync(docId)
                Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)

                ' Apply batch processing optimizations
                pdf.CompressImages(90) ' Compress for faster processing

                ' Print with tracking
                Dim printJob As New PrintJob With {
                    .DocumentId = docId,
                    .StartTime = DateTime.UtcNow
                }
                pdf.Print()
                printJob.EndTime = DateTime.UtcNow
                printJob.Status = PrintStatus.Success

                results.Add(printJob)
            Catch ex As Exception
                results.Add(New PrintJob With {
                    .DocumentId = docId,
                    .Status = PrintStatus.Failed,
                    .Error = ex.Message
                })
            End Try
        Next

        Return Json(New With {
            .totalDocuments = documentIds.Count,
            .successful = results.Count(Function(r) r.Status = PrintStatus.Success),
            .failed = results.Count(Function(r) r.Status = PrintStatus.Failed),
            .results = results
        })
    End Function
End Class
$vbLabelText   $csharpLabel

When Should I Consider IronPrint as an Alternative?

For specialized printing requirements beyond PDF generation, Iron Software also offers IronPrint, a dedicated .NET printing library with improve cross-platform support and advanced printing features. The primary parameter is simply the file path, making it straightforward to integrate into existing enterprise workflows. The product includes complete security documentation and compliance certifications suitable for regulated industries. You can find detailed information about their enterprise support and licensing options on their website. IronPrint specializes in direct printing without PDF generation when that's your primary requirement.

Why Should I Choose IronPDF for PDF Printing?

IronPDF transforms ASP.NET PDF printing from a complex challenge into straightforward implementation while maintaining enterprise security standards. Without requiring Adobe Reader or external dependencies, you can generate and print PDF files with minimal code while ensuring compliance with SOC2, HIPAA, and industry-specific regulations. The PDF library handles everything from HTML conversion to printer configuration, making it ideal for both server-side automation and client-side printing scenarios with full audit trail capabilities. The complete API supports various input formats, editing capabilities, security features, and organization tools for complete PDF management.

Ready to simplify your PDF printing workflow with professional security? Get started for free today with the free trial and experience how IronPDF simplifies document processing in your ASP.NET applications. With complete documentation, direct engineering support, and proven compliance certifications, you'll have production-ready PDF printing running in minutes while meeting all security requirements and regulatory standards. The library's extensive tutorials, code examples, and troubleshooting resources ensure smooth integration into your existing infrastructure.

Frequently Asked Questions

How can I print a PDF directly from an ASP.NET application?

You can print a PDF directly from an ASP.NET application using IronPDF by converting HTML files to PDF and then sending them to a printer. IronPDF simplifies this process with its built-in methods.

What are the benefits of using IronPDF for printing PDFs in ASP.NET?

IronPDF offers several benefits for printing PDFs in ASP.NET, including easy integration, high-quality rendering, and the ability to convert HTML content to PDF with precision.

Is it possible to customize the PDF before printing using IronPDF?

Yes, IronPDF allows you to customize PDFs before printing by adding headers, footers, and watermarks, as well as setting page sizes and margins.

Can IronPDF handle large PDF files for printing?

IronPDF is capable of handling large PDF files efficiently, ensuring that even complex documents are printed accurately and quickly from your ASP.NET application.

Does IronPDF support different printer settings for PDF printing?

IronPDF supports various printer settings, allowing you to specify paper size, orientation, and print quality to match your needs.

Is there a way to preview PDFs before printing in ASP.NET?

With IronPDF, you can generate and display a PDF preview within your ASP.NET application, allowing users to review the document before initiating the print command.

What formats can IronPDF convert to PDF for printing?

IronPDF can convert a wide range of formats to PDF for printing, including HTML, ASPX, and image files, making it versatile for various application needs.

How does IronPDF ensure the quality of printed PDF documents?

IronPDF uses advanced rendering technology to ensure that printed PDF documents maintain high fidelity to the original content, with sharp text and clear images.

Can IronPDF be used to print encrypted or password-protected PDFs?

Yes, IronPDF can handle encrypted or password-protected PDFs, allowing you to print them securely by providing the necessary credentials within your ASP.NET application.

How easy is it to integrate IronPDF into an existing ASP.NET application?

Integrating IronPDF into an existing ASP.NET application is straightforward due to its comprehensive documentation and support for various development environments.

Curtis Chau
Curtis Chau
  Chat with engineering team now
Technical Writer

Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.

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